ABSTRACT

The density of urea (U) in the mixtures of N,N-dimethylformamide (DMF) and water (H2O) was measured within the temperature range of (293.15 to 308.15) K. The results obtained were used to calculate the excess molar volume, VE, of the DMF H2O mixture, apparent molar volumes, V?, of DMF in water and of water in DMF, as well as the partial molar volume of urea in a solution at infinite dilution, Vm?, within the whole concentration range of the mixed solvent (DMF H2O). The data obtained were discussed from the point of view of temperature changes and interaction in solution.

Compounds

#	Formula	Name
1	CH4N2O	urea
2	C3H7NO	dimethylformamide
3	H2O	water

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Variable	Constraint	Phase	Method	#Points
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB::UFactor:4	4
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB::UFactor:4	4
POMD	2 3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 3; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:4	60
POMD	1 2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:4	32
POMD	1 3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:4	32
POMD	1 2 3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Solvent: Mole fraction - 3; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:4	480

Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Volumetric Properties of Urea in the Mixture of N,N-Dimethylformamide with Water

Jozwiak, M.[Malgorzata], Tyczynska, M.[Magdalena]

ABSTRACT